On March 15, 2024, SAC/TC578 (Quantum Computing and Metrology) issued multiple national voluntary standards on quantum measurements. They are the first batch within the topic in China, and all five standards will come into force on October 1, 2024.
Quantum measurement is believed to be more precise and stable comparing with traditional measuring technologies. It is defined as a big potential in China for application in fields including but not limited in high-end equipment, intelligent manufacturing, life science etc.
The key contents and significance of these five standards include:
GB/T 43737-2024 Terminology for quantum measurement
It defines the relevant terms and definitions of quantum measurement, standardizes the term consistency and logical integrity between the professional field of quantum measurement and related fields, making it an important basic standard in the field of quantum measurement.
GB/T 43784-2024 Characterization and measurement of the performance of single-photon sources
It proposed single-photon source performance characterization method, therefore provides a reliable basis for the measurement of spectral, spatial, time-domain distribution and other characteristics of quantum and classical light sources at very weak power levels. This standard greatly improves the measurement limit of spectral radiance.
GB/T 43785-2024 Characterization and measurement of the performance of optical clocks
It classifies the most basic frequency stability and frequency uncertainty indicators of optical clocks. The standard also specifies the test process and data processing process, which are mainly used in important scenarios such as relativistic geodetic survey, optical frequency reference ratio measurement, optical frequency standard value transmission and optical clock product performance evaluation. It is expected to greatly improve the comparability of optical clock performance indicators, while helping optical clock research and industrial development.
GB/T 43735-2024 Methods for the preparation of Rydberg atoms for quantum precision measurement
This standard standardized the preparation of Rydberg atoms, which lays a foundation for promoting the application of precision measurement technology based on Rydberg atoms in microwave, terahertz, communication radar and other fields.
GB/T 43740-2024 Requirements and test methods for performances of the atom gravimeters
It stipulates requirement of atomic gravimeter performance index and test method for ensuring the application of atomic gravimeter in the fields of resource exploration, geological disaster monitoring, earth science research and so on.
All five standards are made by TC578 experts without any adoption from international standards. They are aiming at bridging the gap on the lack of basic standards for the development of quantum sectors. They are expected to optimize the standard system and support the quantum sector development.
